If you have ever wanted to see how many people with your last name are in each state you should probably head over to dynastree.com.
They show a map and even some stats about your last name.
In the US there are 21.594 phone book entries with the surname Chen and approximately 57.584 persons with this name.
Thus, the surname Chen the 423. most frequent name in the US.
People with this surname live in 51 states. Most occurrences are in California: 6.862.
Other states with lots of occurrences are New York (4.289), Texas (1.141), New Jersey (1.128), Massachusetts (836), Illinois (664), Maryland (638), Pennsylvania (523), Washington (500), as well as Florida (486).
The following surnames sound like Chen: Cohen, Cain, Conway, Chan, Cowan, Chaney, Chin, Coon, Conn, Cheney, Cohn, Cooney, Coyne, Cone, Cano, Chun, Conaway, Comeau, Chinn, Cowen, Cahoon, Coen, Cunha, Caine, Cann, Cohan, Coan, Coney, Cuneo, Cuomo.